Katie Holmes, Jessica Biel, and Kate Bosworth were dripping in Tiffany & Co. diamonds as they arrived at the jeweler’s debut of their 2014 Blue Book in NYC on Thursday. But those brilliant rocks weren’t the only aspects about their looks to be coveted!

Normally we don’t associate velvet with spring, but the fuchsia pout made it work!

Kate also went for a bright lip with her pastel pink Kate Ermilio gown, though we felt the colors clashed. Such a shame, too, since she was rockin' such an elegant look with her Old Hollywood waves and Rauwolf clutch!

They all opted for contrasting ensems, but the one thing they had in common: their love for diamonds!